SAMASUNG STRATAGY IS TO BREAK PROMISSES - NO AFTER SALE SERVICE AND DELIVERY

I purchased a TV QA75Q60TAKXXA in December and in July horizontal and vertical lines appeared across the screen. A technician came out and said a part needed to be replaced. The part is not available so they said they would need to replace the TV but then they don't have them in stock either so they said they would replace it with a slightly newer model....but they also don't have it in stock....and so it goes on. Everyone I speak to promises to get a manager to call me and I have yet to receive a call from anyone. I have made all the calls and spoken to Ntabiseng Terrance, 'Azola 'Lieketseng 'Benson Thepiso, Shirley, Shaniese, Edeloda, Siyabelo, Trevor, Phaliso, Keke, Lydia, etc...after sales service is pathetic.